US20170025144A1 - Inter-rack gear track system - Google Patents
Inter-rack gear track system Download PDFInfo
- Publication number
- US20170025144A1 US20170025144A1 US14/968,851 US201514968851A US2017025144A1 US 20170025144 A1 US20170025144 A1 US 20170025144A1 US 201514968851 A US201514968851 A US 201514968851A US 2017025144 A1 US2017025144 A1 US 2017025144A1
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- US
- United States
- Prior art keywords
- gear track
- rack
- segment
- track segment
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/22—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records
- G11B17/225—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records wherein the disks are transferred from a fixed magazine to a fixed playing unit using a moving carriage
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F7/00—Show stands, hangers, or shelves, adapted for particular articles or materials
- A47F7/0057—Show stands, hangers, or shelves, adapted for particular articles or materials for disklike articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
- B65G1/02—Storage devices
- B65G1/04—Storage devices mechanical
- B65G1/06—Storage devices mechanical with means for presenting articles for removal at predetermined position or level
Definitions
- This patent application is directed to data storage server configurations and, more specifically, to a disc transport drive mechanism.
- gear tracks are either a single long piece of gear track or multiple segments that are fastened together.
- FIG. 1 is a top plan view of an optical disc storage and retrieval system with an inter-rack gear track system in accordance with an embodiment of the present technology.
- FIG. 2 is an exploded, partial top plan view of a disassembled multi-rack assembly including an inter-rack gear track system according to a representative embodiment.
- FIG. 3A is a top plan view of the compression segment of the inter-rack gear track system shown in FIG. 2 .
- FIG. 3B is a top plan view of the compression segment shown in FIG. 3A configured for transport.
- FIG. 4 is a top plan view of the clamping segment of the inter-rack gear track system shown in FIG. 2 .
- FIG. 5 is a top plan view of an intermediate segment of the inter-rack gear track system shown in FIG. 2 .
- FIG. 6 is a top plan view of an assembled multi-rack assembly including the inter-rack gear track system.
- An inter-rack gear track system for use on a multi-rack assembly, such as an optical disc storage and retrieval system.
- the inter-rack gear track system includes a first rack, a second rack, and at least one intermediate rack positioned between the first and second racks.
- a segmented gear track extends from the first rack to the second rack.
- a compression segment is slidably coupled to a base of the first rack and positioned against a resilient member, such as a compression spring.
- a clamping segment is slidably coupled to a base of the second rack, and an intermediate segment is slidably coupled to a base of the intermediate rack.
- a clamping mechanism is mounted to the second rack and is operative to move the clamping segment against the intermediate segment, thereby forcing the compression segment against the resilient member and clamping the compression segment, the intermediate segment, and the clamping segment together.
- the clamping mechanism comprises a gear train configured to engage an end portion of the clamping segment.
- FIG. 1 illustrates an optical disc storage and retrieval system 100 that includes a plurality of storage units 102 ( 1 )- 102 ( 5 ) and a disc drive unit 104 .
- the storage units 102 ( 1 )- 102 ( 5 ) each include trays 106 that store discs 10 .
- the disc drive unit 104 includes a disc drive 114 operative to read and write to the discs 10 .
- the storage units 102 ( 1 )- 102 ( 5 ) and the disc drive unit 104 are connected together as a multi-rack assembly and are serviced by a disc transport robot 108 .
- the disc transport robot 108 travels along an inter-rack gear track 120 to load and retrieve the discs 10 from the trays 106 .
- a disc loader robot 112 moves the discs 10 from a stage 110 to the disc drive 114 .
- Each storage unit 102 ( 1 )- 102 ( 5 ) includes a rack supporting the trays 106 and the inter-rack gear track 120 .
- the storage unit 102 ( 1 ) includes a first rack 130
- the storage unit 102 ( 5 ) includes a second rack 132 .
- the storage units 102 ( 2 )- 102 ( 4 ) each include an intermediate rack 134 ( 1 )- 134 ( 3 ), respectively axially aligned with the first/proximal and second/distal rack assemblies 130 and 132 , respectively. It should be appreciated from the figure that the racks are shown in a disengaged state, whereby the individual racks can be easily transported.
- the individual racks 130 , 132 , and 134 ( 1 )- 134 ( 3 ) are schematically represented in the figures to illustrate only the base portion of a component rack.
- the racks can be 19-inch EIS compliant racks.
- Each rack also includes a gear track segment.
- the first rack 130 includes a compression segment 122 .
- Intermediate racks 134 ( 1 )- 134 ( 3 ) include intermediate segments 126 ( 1 )- 126 ( 3 ), respectively, and the second rack 132 includes a clamping segment 124 .
- the structure and function of each gear track segment is described more fully below.
- the compression segment 122 is slidably coupled to the first rack 130 and positioned against a resilient member, such as a compression spring 142 .
- the compression segment 122 is slidably mounted to the base 131 of the first rack 130 with suitable guide pins and/or fasteners 140 extending through elongate slots 138 in the compression segment 122 .
- the compression segment 122 is axially movable back and forth relative to the base against the compression spring 142 in the X direction while remaining aligned in the Y direction.
- Each rack, such as the first rack 130 includes one or more alignment pins 135 on one side of the base and alignment sockets 137 on the opposing side of the base.
- the alignment pins 135 on one base are sized and positioned to securely fit into the sockets 137 of an adjacent base, so as to securely interconnect the racks and maintain axial alignment of the gear track segments with each other.
- the base of the first rack 130 includes a spring seat 144 to retain the compression spring 142 in position against the compression segment 122 .
- the compression segment 122 includes a plurality of teeth 136 configured to mate with a pinion gear (not shown) of the disc transport robot 108 (see FIG. 1 ). As shown in FIG. 3A , the compression segment 122 is in a released state whereby the multi-rack assembly is ready for assembly as described below.
- the compression segment 122 is configured so it can be retained in a stowed state by a retainer pin 148 .
- the retainer pin 148 is inserted through a mating retainer aperture 146 in the end of the compression segment 122 , which axially aligns with a corresponding aperture (not shown) in the base.
- the compression segment 122 is retained out of the way and within the envelope of the first rack 130 during transportation.
- the retainer pin 148 Prior to assembly of the racks, the retainer pin 148 is removed from the mating retainer aperture 146 to allow the compression segment 122 to extend as shown in FIG. 3A before the first/proximal rack 130 is attached to an adjoining rack, such as an intermediate rack or the second/distal rack 132 .
- the second rack 132 includes a clamping segment 124 slidably coupled to the base of the second rack 132 .
- the clamping segment 124 is coupled to the base of the second rack 132 with suitable fasteners 156 that extend through slots 154 in the clamping segment, similar to the configuration of the first/proximal rack assembly 130 discussed above.
- the second rack 132 also includes a clamping mechanism 150 operative to move the clamping segment 124 in direction B.
- the clamping mechanism 150 includes an arm 158 attached to a gear train (e.g., gears 160 and 162 ).
- the arm 158 is movable between a release position and a clamp position.
- the clamping segment In the release position, the clamping segment can move axially over the fasteners/guide pins for at least a distance corresponding to the length of the slots 127 .
- the clamping mechanism 150 also includes a latch 164 configured to retain the arm 158 in the clamp position.
- the intermediate rack 134 ( 1 ) includes an intermediate segment 126 ( 1 ) attached to the intermediate rack 134 ( 1 ) with suitable fasteners 123 extending through slots 127 similar to the configurations discussed above.
- the intermediate segment 126 ( 1 ) also includes a plurality of teeth 125 configured to mate with the pinion gear (not shown) of the disc transport robot 108 (see FIG. 1 ).
- the intermediate racks 134 ( 2 ) and 134 ( 3 ) and intermediate segments 126 ( 2 ) and 126 ( 3 ) have substantially similar construction as the intermediate rack 134 ( 1 ) and the intermediate segment 126 ( 1 ).
- FIG. 6 illustrates an assembled multi-rack assembly with the inter-rack gear track 120 clamped together.
- each gear track segment is resiliently urged against the others imprecise axial alignment and provide a continuous row of gear teeth along which the pinion of the robot can easily and smoothly travel during operation of the optical disc storage and retrieval system 100 . Therefore, the inter-rack gear track 120 is easily configured for use without requiring installation and alignment of the individual gear track segments in the field.
- gear track teeth can face upwards from the base of the respective racks.
Abstract
Description
- This patent application claims the priority to and the benefit of U.S. Provisional Patent Application No. 62/196,779, titled Inter-Rack Gear Track System, filed Jul. 24, 2015, which is incorporated herein in its entirety by reference thereto.
- This patent application is directed to data storage server configurations and, more specifically, to a disc transport drive mechanism.
- In data storage server configurations, it is sometimes desirable to assemble multiple racks together for efficient storage of media, such as optical discs. It is also desirable to load and retrieve storage media from a multi-rack assembly with a single disc transport system or disc transport robot. Typically, a disc transport robot travels along a gear track by engaging the gear track teeth with a pinion gear to drive the disc transport robot back and forth along the gear track. The disc transport system can travel between multiple racks along the gear track. Traditionally, gear tracks are either a single long piece of gear track or multiple segments that are fastened together. These traditional gear track arrangements make transport, assembly, and maintenance of the gear track cumbersome. Accordingly, there is a need for a gear track that is easier to assemble and maintain across multiple racks.
- Embodiments of the inter-rack gear track system introduced herein may be better understood by referring to the following Detailed Description in conjunction with the accompanying drawings, in which like reference numerals indicate identical or functionally similar elements:
-
FIG. 1 is a top plan view of an optical disc storage and retrieval system with an inter-rack gear track system in accordance with an embodiment of the present technology. -
FIG. 2 is an exploded, partial top plan view of a disassembled multi-rack assembly including an inter-rack gear track system according to a representative embodiment. -
FIG. 3A is a top plan view of the compression segment of the inter-rack gear track system shown inFIG. 2 . -
FIG. 3B is a top plan view of the compression segment shown inFIG. 3A configured for transport. -
FIG. 4 is a top plan view of the clamping segment of the inter-rack gear track system shown inFIG. 2 . -
FIG. 5 is a top plan view of an intermediate segment of the inter-rack gear track system shown inFIG. 2 . -
FIG. 6 is a top plan view of an assembled multi-rack assembly including the inter-rack gear track system. - The headings provided herein are for convenience only and do not necessarily affect the scope or meaning of the claimed embodiments. Further, the drawings have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be expanded or reduced to help improve the understanding of the embodiments. Moreover, while the disclosed technology is amenable to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and are described in detail below. The intention, however, is not to limit the embodiments described. On the contrary, the embodiments are intended to cover all modifications, equivalents, and alternatives falling within the scope of the embodiments.
- An inter-rack gear track system is disclosed for use on a multi-rack assembly, such as an optical disc storage and retrieval system. The inter-rack gear track system includes a first rack, a second rack, and at least one intermediate rack positioned between the first and second racks. A segmented gear track extends from the first rack to the second rack. A compression segment is slidably coupled to a base of the first rack and positioned against a resilient member, such as a compression spring. A clamping segment is slidably coupled to a base of the second rack, and an intermediate segment is slidably coupled to a base of the intermediate rack. A clamping mechanism is mounted to the second rack and is operative to move the clamping segment against the intermediate segment, thereby forcing the compression segment against the resilient member and clamping the compression segment, the intermediate segment, and the clamping segment together. In some embodiments, the clamping mechanism comprises a gear train configured to engage an end portion of the clamping segment.
- Various examples of the devices introduced above will now be described in further detail. The following description provides specific details for a thorough understanding and enabling description of these examples. One skilled in the relevant art will understand, however, that the techniques discussed herein may be practiced without many of these details. Likewise, one skilled in the relevant art will also understand that the technology can include many other features not described in detail herein. Additionally, some well-known structures or functions may not be shown or described in detail below so as to avoid unnecessarily obscuring the relevant description.
- The terminology used below is to be interpreted in its broadest reasonable manner, even though it is being used in conjunction with a detailed description of some specific examples of the embodiments. Indeed, some terms may even be emphasized below; however, any terminology intended to be interpreted in any restricted manner will be overtly and specifically defined as such in this section.
-
FIG. 1 illustrates an optical disc storage andretrieval system 100 that includes a plurality of storage units 102(1)-102(5) and adisc drive unit 104. The storage units 102(1)-102(5) each includetrays 106 thatstore discs 10. Thedisc drive unit 104 includes adisc drive 114 operative to read and write to thediscs 10. The storage units 102(1)-102(5) and thedisc drive unit 104 are connected together as a multi-rack assembly and are serviced by adisc transport robot 108. Thedisc transport robot 108 travels along aninter-rack gear track 120 to load and retrieve thediscs 10 from thetrays 106. Adisc loader robot 112 moves thediscs 10 from astage 110 to thedisc drive 114. - Each storage unit 102(1)-102(5) includes a rack supporting the
trays 106 and theinter-rack gear track 120. With reference toFIG. 2 , the storage unit 102(1) includes afirst rack 130, and the storage unit 102(5) includes asecond rack 132. The storage units 102(2)-102(4) each include an intermediate rack 134(1)-134(3), respectively axially aligned with the first/proximal and second/distal rack assemblies inter-rack gear track 120, theindividual racks - Each rack also includes a gear track segment. For example, the
first rack 130 includes acompression segment 122. Intermediate racks 134(1)-134(3) include intermediate segments 126(1)-126(3), respectively, and thesecond rack 132 includes aclamping segment 124. The structure and function of each gear track segment is described more fully below. - As shown in
FIG. 3A , thecompression segment 122 is slidably coupled to thefirst rack 130 and positioned against a resilient member, such as acompression spring 142. Thecompression segment 122 is slidably mounted to thebase 131 of thefirst rack 130 with suitable guide pins and/orfasteners 140 extending throughelongate slots 138 in thecompression segment 122. Thus, thecompression segment 122 is axially movable back and forth relative to the base against thecompression spring 142 in the X direction while remaining aligned in the Y direction. Each rack, such as thefirst rack 130, includes one or more alignment pins 135 on one side of the base andalignment sockets 137 on the opposing side of the base. The alignment pins 135 on one base are sized and positioned to securely fit into thesockets 137 of an adjacent base, so as to securely interconnect the racks and maintain axial alignment of the gear track segments with each other. The base of thefirst rack 130 includes aspring seat 144 to retain thecompression spring 142 in position against thecompression segment 122. Thecompression segment 122 includes a plurality ofteeth 136 configured to mate with a pinion gear (not shown) of the disc transport robot 108 (seeFIG. 1 ). As shown inFIG. 3A , thecompression segment 122 is in a released state whereby the multi-rack assembly is ready for assembly as described below. - As shown in
FIG. 3B , thecompression segment 122 is configured so it can be retained in a stowed state by aretainer pin 148. Theretainer pin 148 is inserted through amating retainer aperture 146 in the end of thecompression segment 122, which axially aligns with a corresponding aperture (not shown) in the base. Thus, thecompression segment 122 is retained out of the way and within the envelope of thefirst rack 130 during transportation. Prior to assembly of the racks, theretainer pin 148 is removed from themating retainer aperture 146 to allow thecompression segment 122 to extend as shown inFIG. 3A before the first/proximal rack 130 is attached to an adjoining rack, such as an intermediate rack or the second/distal rack 132. - As shown in
FIG. 4 , thesecond rack 132 includes aclamping segment 124 slidably coupled to the base of thesecond rack 132. In this embodiment, theclamping segment 124 is coupled to the base of thesecond rack 132 withsuitable fasteners 156 that extend throughslots 154 in the clamping segment, similar to the configuration of the first/proximal rack assembly 130 discussed above. Thesecond rack 132 also includes aclamping mechanism 150 operative to move theclamping segment 124 in direction B. Theclamping mechanism 150 includes anarm 158 attached to a gear train (e.g., gears 160 and 162). Thearm 158 is movable between a release position and a clamp position. In the release position, the clamping segment can move axially over the fasteners/guide pins for at least a distance corresponding to the length of theslots 127. Asarm 158 is moved in direction A toward the clamp position, it rotatesgear 160 that rotatesgear 162, which is engaged withteeth 152, to drive the clampingsegment 124 in direction B as shown. In some embodiments, theclamping mechanism 150 also includes alatch 164 configured to retain thearm 158 in the clamp position. - As shown in
FIG. 5 , the intermediate rack 134(1) includes an intermediate segment 126(1) attached to the intermediate rack 134(1) withsuitable fasteners 123 extending throughslots 127 similar to the configurations discussed above. The intermediate segment 126(1) also includes a plurality ofteeth 125 configured to mate with the pinion gear (not shown) of the disc transport robot 108 (seeFIG. 1 ). The intermediate racks 134(2) and 134(3) and intermediate segments 126(2) and 126(3) have substantially similar construction as the intermediate rack 134(1) and the intermediate segment 126(1). -
FIG. 6 illustrates an assembled multi-rack assembly with theinter-rack gear track 120 clamped together. Once thecompression segment 122 is released from the transport state by pulling retainer pin 148 (seeFIG. 3B ), the various racks are interconnected with the alignment pins mating with the corresponding alignment sockets of the adjacent rack. The segments extend beyond the edge of the body, overlapping the adjoining edges of the adjacent bodies. Theclamping mechanism 150 can be moved to the clamp position, thereby pushing theclamping segment 124 against the intermediate segments 126(1)-126(3) to compress thecompression segment 122 againstcompression spring 142. When the clamping mechanism is moved the segments translate axially along the guide pins so as to push against the compression segment. Accordingly, each gear track segment is resiliently urged against the others imprecise axial alignment and provide a continuous row of gear teeth along which the pinion of the robot can easily and smoothly travel during operation of the optical disc storage andretrieval system 100. Therefore, theinter-rack gear track 120 is easily configured for use without requiring installation and alignment of the individual gear track segments in the field. - Although the embodiments described herein illustrate the teeth of the gear track segments as facing to the side of their respective racks, in other embodiments, the gear track teeth can face upwards from the base of the respective racks.
- The above description and drawings are illustrative and are not to be construed as limiting. Numerous specific details are described to provide a thorough understanding of the disclosure. However, in some instances, well-known details are not described in order to avoid obscuring the description. Further, various modifications may be made without deviating from the scope of the embodiments.
- Reference in this specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the disclosure. The appearances of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Moreover, various features are described which may be exhibited by some embodiments and not by others. Similarly, various requirements are described which may be requirements for some embodiments but not for other embodiments.
- The terms used in this specification generally have their ordinary meanings in the art, within the context of the disclosure, and in the specific context where each term is used. It will be appreciated that the same thing can be said in more than one way. Consequently, alternative language and synonyms may be used for any one or more of the terms discussed herein, and any special significance is not to be placed upon whether or not a term is elaborated or discussed herein. Synonyms for some terms are provided. A recital of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification, including examples of any term discussed herein, is illustrative only and is not intended to further limit the scope and meaning of the disclosure or of any exemplified term. Likewise, the disclosure is not limited to various embodiments given in this specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. In the case of conflict, the present document, including definitions, will control.
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US14/968,851 US9767839B2 (en) | 2015-07-24 | 2015-12-14 | Inter-rack gear track system |
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US14/968,851 US9767839B2 (en) | 2015-07-24 | 2015-12-14 | Inter-rack gear track system |
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US9767839B2 (en) * | 2015-07-24 | 2017-09-19 | Facebook, Inc. | Inter-rack gear track system |
CN113305871A (en) * | 2021-05-28 | 2021-08-27 | 陕西科技大学 | Soft object stretching and clamping device |
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